Clonazepam is used to prevent and control seizures. This medication is known as an anticonvulsant or antiepileptic drug. It is also used to treat panic attacks. Clonazepam works by calming your brain and nerves. It belongs to a class of drugs called benzodiazepines.How to use · Precautions · Drug interactions · Side effects. Clonazepam belongs to the class of medications called benzodiazepines. over on one side, cross-scored on the other, contains clonazepam mg. Clonazepam, sold under the brand name Klonopin among others, is a medication used to .. Because clonazepam is effective in low milligram doses ( mg clonazepam = 10 mg diazepam), it is said to be among the class of highly potent .